Drilling apparatus.



l. KAMMERDINER.

DRILLING APPARATUS.

APPLIQATION FILED JUNE25, 1914.

1,128,326. A Patented Feb.16,1915.

ATTQRNEY.

A'Janinekannaanrinata or FULLnnroN, CALIFORNIA.

DRILLING arranar'trsj I To 'all whom fit maycofnt'em: v

Be it known that I, JAMES KAMMERDINB, a citizen 'of the United Statesof-America,

residing at Fullerton, county of Orange, State of California, haveinvented a certain -new 'and useful` Drilling Apparatus; and I do herebydeclarethe following 'to be Ia ful-l,

clear, vand exact description of the invention,

suchy as will lenable others skilled itu the 'art to' which itappertains to make `and use the same.`

This invention relates to drilling 'a'.pf'para-` tus, vand it may besaid'to consist inthe pro- Speciication ofLetters Patent. fPaten-tedFeb, 16, 1915, applic-anun mea annees, 191,4. semina. atasco.

on the line 3-3 of Fig. 1 and showing the cable operatively connectedwith the drilling mechanism; Fig. 4 is a broken enlarged sectional viewof .the drilling apparatus,

showing the; :cable operatively4 disconnected .from..the1drillingmechanism; and Fig. 5

isacross-se'ctional,view taken onA lthe linel vision of the novel -andadvantageous fea; j

tures and in *the novel and improved-construction, arrangement, andcombination of parts and devices as will be apparentfrom the descriptionand claims which "follow hereinafter.

One'obje'ct 'of the invention is VLto' providea novel and improvedpercussive drillingapparatus in which the stem vof the Adrill bit ishollow and passes through a stuilin'g box at the lower end of thecasing; whereby the drilling operation may be 'expedited by the use 'ofiiuid under pressure, and the drill bit may be of such size as to 4makea hole suiiiciently largery than the casing to permit of the casingbeing let down 'as the hole is deepened without the'necess'ity ofbailinior l l i l sageway 20 which is in vcommunication with reaming'thehole.v

Another object of the inventioni's to prov vid'e 'a novel 'and improvedmeans whereby the rope 'or cable may be easily and' quickly operativelyconnected?` with or .disconnected 'from ldrilling mechanism withoutraising the drilling mechanism from thelower part Y'of the casing`Further objects of the invention are to specified which is simple inconstruction,

. economical t'c manufacture, install; and

maintaineasy and convenient to' use, and effect-ive in action. Otherobjects and the advantages of the invention will heA app-arent from'careful consideration ofthefollowing description .taken on the line2-2of Fig. 1; Fig. 3 is an enlarged longitudinal sectional viewtakenprovide drilling apparatus of vthej nature'v erated bythe usual orThecasingl'() is provided with a stufling box 11 ior the likeaft-'itslower lend vand it is provided with ashoulder 12 lat a suitabledistance' above its .lower end. The shoulder '12 is `preferably providedby means of the lower :end -'of the fscction, 13' of the casing whichsection i'S of .smaller diameter mthan the' lower section 14 of thecasing and is vconnected to the section 14 by means vof the I union 1,5.

The drilling mechanism preferably C011-, Y

sists ofthe bar 16 having' its lower end screwed into the upper end vofthe 3ars 17,'

andy the stem 1'8 which passes sli'dably through the stuiiin'g' box 11and, which has its upper enddetachably connected tothe lower end of thejars 17 and has detachably mounted on itsdowerend the bit 19 whichlatter ispreferably greater in widthl than l are, the sections 13 or 14,or the union 15',

in diameter. ,The stem has thereon a shoulder .-23 andqitis providedwith a' pasthe. passageway 21;and thebranch passage; ways 22 in thebitf19. A T'tting 24is pro-4 vided ;at the upper end -of the'caising 10,and to the T-ittin'g 24 isconnected a plpe 25 leading'to a' suitablesource--not 'shown-'of water under pressure. 26 preferably has thereon asliding 'rod 27 whichpasses through the stuffing box 28 on theT-litt-ing 24. The cable 26 may be opany `approved means not shown. v Y

vThe improved means 'for operatlvely connecting "or disconnecting thecable- 26 and the," drilling mechanism will now be de:

Scribed. A mandrel 29 provided with a j shoulder 30 has `its upper fendsuitably se.

cured tothe lower end ofthe cable 26 and has its lower end portionadapted to fit into the converging upper'end portion of the h'ollow part31 which latter is formed with longitudinal slots 32'land hasf-its lowerend l suitablyattached 'to the upper end of the` bai` 16 of the drillingmechanism. -With the hollow kpart 31 is movably arranged a part 33 whichhas thereon a pin 35 extending laterally beyond the part 31 through theslots 32 and which is pressed upwardly by a spring 31 resting on the topend of the bar 16. Slips 36 resting on the top end of the part have oneside thereofformed to lit against the converging upper end portion 37 ofthe part 3l and have the other side 38 thereof roughened to grip thelower end portion of the mandrel 29 when the spring 34 acts to moveupwardly the part andthereby move the slips against the convergingportion 37 of. the part 31, see Fig. 3.

ln drilling a hole 39 in the ground 4:0, fluid under pressure passesthrough the pipe 25, casing 10, and passageways 20, 21, and 22, and actsto soften the ground at the bottom of the hole and carry mud or loosedirt to the top and thence out of the hole. rlhe casing 10 may beraised, lowered, or held in adjusted position by the usual pipe liftingdevice or other suitable means, not shown. As the hole 39 is deepenedsections of casing may be added at the top of the lhole by rst loweringthe casing 10 to have the shoulder 12 engage the pin 35 and movedownwardly the part l33 against the spring 34 so that the slips 36 canmove downwardly out of engagement with the mandrel 29, see Fig. 4, andthen unscrewing the if-fitting 24 and raising the cable 26 out of thecasing 10 until the shoulder 30 engages the lower end of the stuiiingbox 28 and lifts the T- litting out of the way, whereupon the additionalsections may be connected to the top of the casing. The shoulder 23engages with the upper end of the stuffing boX 11 when the cable 26 isoperatively disconnected from the drilling mechanism. When sections arejoined to the casing 10, the same may be lowered in the hole 39 and thefitting 24 may be screwed on the top thereof and the cable 26 may be letdown to haveA the mandrel 29 enter the converging portion-37 of the part31, whereuponV the casing 10 may be raised to raise the shoulder 12 outof engagement with p the pin 35 to allow the spring 34 to act to movethe part 30 and thus cause the slips 36 to be crowded between theconverging portion 37 and the mandrel 29 to grip the latter. l

The form of construction which has been particularly illustrated anddescribed ad- `such changes and modifications as do not depart from thespirit and scope of the invention which is defined in the appendedclaims.

iaaasae ll claim:

1. lln combination in percussive drilling apparatus, a casing, a stuiingbox at the lower end of the casing, a T-itting at the upper end of thecasmg, a pipe on the T-fitting for conducting fluid underpressure,drilling mechanism including a stem passing slidably through thestuffing box and provided with a passageway, a bit on the lower end ofthe stem having passageways in communication with the rst mentionedpassageway, said bit being greater in width than the diameter of thecasing, and means for operating the drilling mechanism.

2. ln drilling apparatus, the combination of a casing, drillingmechanism disposed in` the casing and including a stem extending beyondthe lower end of the casing, abit on the lower end of the stem, ashoulderv on the stem, means at the lower end of the casing for theshoulder to bear against to support the drilling mechanism, a cable, andmeans for operatively connecting said cable with' i cable adapted to itinto the hollow part,

automatic means for moving the slips against said converging portion,and a pin engageable by said shoulder to render the automatic meansinoperative.

4. The combination of a casing provided with a shoulder, drillingmechanism disposed in the casing, a hollow part thereon provided -withslots and with a converging portion, a spring-pressed part arranged inthe hollow-part and having a pin thereon extending through said slotsand adapted tobe engaged by said shoulder, a cable having a mandrelthereon adapted to it into the hollow part, and v slips disposed on thespring-pressed part and adapted to grip the mandrel when positionedadjacent to said converging portions.

lin testimony whereof, l have signed my name to this specification inthe presence of two subscribing witnesses. at Los Angeles, county of LosAngeles, State of California, this 19th day of June A. D. 1914.

f JAMES KAMMERDllNlER. 'Witnessesz W. A. AMEND, A. lill. Lmnnns.

